Los Angeles (CNN) -- Tourists staying at a Los Angeles hotel bathed, brushed teeth and drank with water from a tank in which a young woman's body was likely decomposing for more than two weeks, police said.

Elisa Lam's corpse was found in the Cecil Hotel's rooftop water tank by a maintenance worker who was trying to figure out why the water pressure was low Tuesday.

Lam's parents reported her missing in early February. The last sighting of her was in the hotel on January 31, Los Angeles Police said.